2003, Conexant Systems, Inc. All Rights Reserved. Conexant and the Conexant
logo are registered trademarks of Conexant Systems, Inc. All other trademarks
are owned by their respective owners. Although Conexant strives for accuracy
in all its publications, this material may contain errors or omissions and is
subject to change without notice.
THIS MATERIAL IS PROVIDED AS IS AND WITHOUT
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE AND NON-INFRINGEMENT.
Conexant shall not be liable for any
special, indirect, incidental or consequential damages as a result of its use.
Convergence Video
Video Encoders/Decoders
03-0859
CX25840/1/2/3 Features
Auto detection and configuration
of worldwide broadcast A/V standards
Worldwide video standards NTSC (M, J, 4.43), PAL
(B, D, G, H, I, M, N, Nc), SECAM (K, L)
Worldwide audio standards BTSC, EIA-J, A2,
NICAM, FM/AM
Full 2 10-Bit ADCs and data path
Flexible video input mux with integrated
anti-alias filtering
Four line adaptive comb filter for NTSC and PAL
Flexible video output port - 27 MHz ITU-R BT.656,
VIP 2, or ITU-R BT.601 video with separate syncs
Macrovision detection
Programmable VBI data slicer for data services such
as closed caption, Teletext, and program guides
Power-up configurable two wire serial command
interface or two wire VIP 1.1/2 host port interface
Multiple audio outputs serial audio interface I2S or
AC97 or embedded as ancillary data in the video stream
Flexible sample rate conversion on all audio inputs
and outputs
Hardware interrupt to eliminate polling
Fast locking mode for security camera applications
Auxiliary clock output For providing an over sample
audio clock locked to the video or for use as a general
purpose PLL output
Infrared transmit and receive logic
Internal voltage regulation for single supply operation
Low power
80-pin TQFP
Typical Applications
Flat panel displays
HDTV
TV tuners
DVD players
Video cameras
Set-top boxes
VCRs and PVRs
Game consoles
www.conexant.com
General Information:
U.S. and Canada: (888) 855-4562
International: (732) 345-7500
Headquarters
4000 MacArthur Blvd.
Newport Beach, CA 92660
Order# 102205A
CX25840/1/2/3 Diagram
MPEG Video
Decoder
CX2584X
Tuner
VIF
CVBS
SIF
Stereo A/D
Left+Right
Ch
I2S
Video Decoder
Broadcast Audio
Decoder
CCIR 656
I2S
CVBS
L, R Stereo
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